
Calcium Chaos is a casual Twin-Stick Roguelite that takes you on a journey by train to confront the necromancer and her skeleton army. Get ready to explore a world filled with crazy weapon combinations and unexpected allies as you embark on an epic quest to save the world!
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0/day in the week to Jul 21 → 0/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
Skeletons are invading, and your only defense is a toaster and a chicken! Embark on a whimsical adventure through a land plagued by pesky skeletons! Uncover weird and wacky weapon synergies to fight back against the bony baddies. Along the way, you'll gather a rag-tag group of heroes who will aid you on your mission- will you have the guts to stop the necromancer's plans and save the world?

Discover an arsenal of ONE MILLION different weapon combinations, from explosive toast to homing robot chickens, and customize your loadout to suit your playstyle as you wreak havoc on your enemies.

Recruit up to four friends to join your quest to defeat the necromancer, or measure yourself by playing alone.

Transform your train into a formidable base of operations for the friends you meet along the way, buy upgrades, decorate your train, and prepare your next mission!
Dive into procedurally generated levels filled with challenges!
Test your skills and adaptability as you strive to overcome the ever-growing threats that await you.
Genres
Engagement
Reviews
Themes across 40 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
This is generally one of the best games i've ever played in my life super fun loved every second! Great for if you have friends over and or remoteplaying with people across the seas. Highly Recommend :3
I love this game! My only complaint was that they didn't support Cloud Save. Going between my Steam Deck and various Windows machines, Cloud Save is a must for me. THEY ADDED CLOUD SAVE! I have been having an AWESOME time playing this 4 player coop with my kids. We are loving the weapons and the various combinations are always really fun to try out and see what wacky weapon we will invent next. The comedy is silly and fun. We have been laughing and enjoying our time together! I don't know how in depth the permanent progression is yet, so far we are collecting milk bottles and have a few upgrades we can do. I hope there are more as we recover more of our train. Highly recommended :)
Media

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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English**languages with full audio support
Hours played at review time, across 40 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
Full review: https://www.screenhype.co.uk/calcium-chaos-derailed-review-skeletons-feathers-and-absolute-mayhem/ I am so, so glad I got to play this game. Calcium Chaos: Derailed is light-hearted, fun, humourous, and enjoyable to play. It's got that old-school arcade feel, but with modern graphics, and the style matches the tone of the game perfectly. The only issues I found were the slight repetitiveness (especially in the audio switches between exploring and fighting). I also would have liked a bit more backstory in the introduction, but that's just my preference for games - I'm typically a narrative game player.
Omg classic, retro game that works it keeps on providing entertainment..
Жаль в стиме нету варианта сойдёт. Только так могу описать эту игру. Неплохой визуал с чутка "всратыми" анимациями. Забавная механика комбинации оружия, чем то напоминает noita или скорее magic craft. Но проблема баланса крайне замета, так как основная сила оружия зависит от базы которую вы выбрали, и тут две крайности, или в результате ты получишь оружие уничтожение или будешь ковырять врагов по 5 минут. Так же прогрессия немного странная, молоко (мета валюта) в начале как будто бы получается быстрее, но фармить её нет смысла, всё самое сильное оружие ты получаешь за закрытие локаций. А возможность делать больший уровень прокачки (добавлять в базу ещё больше дополнений) ты спрерва вроде получаешь по 1 на локацию, но с третей локи тебе резко дают сразу 3 апгрейда, из за чего твоя сила возрастает в разы, но на самом деле сила боссов, даже финального вообще не сопостовима с тем что тебе дают. Баги в игре сильно сконцентрированы в конце игры, я пару раз застревал в стенках, а кнопка в меню "я застрял" просто не работала, имеются секретки которые невозможно забрать и тд, с учётом когда были последние патчи, фиксов не намечается. Но в принцепе пробежать можно, посмотреть на комбинации, игра простая на средней так и так, играть на хардкоре уже 0 смысла, из за того же баланса. Тот кто придумал ачивку на пройти без смертей, это отвратительнейшее решеиее, она не интересная, это просто душный гринд
Best enjoyed with friends
Great animations and the idea of the weapon combiner.
Super fun twin stick shooter with lots of weapon combining that can get quite zany!
got the game for free to test, honestly its a real fun game not too much reading and simple movement from one side to the other of the screen, my only complaint was it was awsd buttons rather then the updown left right buttons when moving the character around but it didnt put me off playing it. its a fairly cheap game with hours of potential fun if you havent defiantly give it a try :)
What it says on the tin - a casual twin-stick roguelite, reminiscent of Full Mojo Rampage, but the art style is way more readable here. Plays very smoothly, controls are nice and the variety of weapons is pretty cool too ^_^
Selling now
See how fast this game is selling right now — estimated copies and revenue per day from recent review growth.
Players by region
Where this game's players are, estimated from review languages.
Related
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| — | 0 | — | — | |
| $41.8M | 140.8K | 96% | $14.99 | |
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| $26K | 113 | 86% | $9.99 | |
| $9.6K | 27 | 100% | $14.99 |
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